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我正在實現Perceptron 3D,在這種情況下,我有n個可分離的點,在這種情況下,藍色點和紅色點,我需要從我的字典,我試着這樣做:在Python中繪製可分離3D點的最簡單方法
training_data = {
'0.46,0.98,-0.43' : 'Blue',
'0.66,0.24,0.0' : 'Blue',
'0.35,0.01,-0.11' : 'Blue',
'-0.11,0.1,0.35' : 'Red',
'-0.43,-0.65,0.46' : 'Red',
'0.57,-0.97,0.8' : 'Red'
}
def get_points_of_color(data, color):
x_coords = [point.split(",")[0] for point in data.keys() if
data[point] == color]
y_coords = [point.split(",")[1] for point in data.keys() if
data[point] == color]
z_coords = [point.split(",")[2] for point in data.keys() if
data[point] == color]
return x_coords, y_coords, z_coords
fig = plt.figure()
ax = fig.add_subplot(111, projection='3d')
# Plot blue points
x_coords, y_coords, z_coords = get_points_of_color(training_data, 'Blue')
ax.scatter(x_coords, y_coords, z_coords, 'bo')
# Plot red points
x_coords, y_coords, z_coords = get_points_of_color(training_data, 'Red')
ax.scatter(x_coords, y_coords, z_coords, 'ro')
ax.set_xlim(-1, 1)
ax.set_ylim(-1, 1)
ax.set_zlim(-1, 1)
ax.set_xlabel('X')
ax.set_ylabel('Y')
ax.set_zlabel('Z')
plt.show()
但沒有成功,我得到了以下錯誤消息:
TypeError: Cannot cast array data from dtype('float64') to dtype('S32') according to the rule 'safe'
PS:我使用的是:
import matplotlib.pyplot as plt
from mpl_toolkits.mplot3d import Axes3D
我想知道我做錯了什麼,以及如何正確繪製它們。
你的座標是字符串,甚至分裂你有'「0.46」後',而不是'0.46'。你需要將它們轉換爲浮點數,float(「0.46」)== 0.46'。 – ImportanceOfBeingErnest